Glossary Module 1 electric charge - is a basic property of elementary particles of matter. The protons in an atom, for example, have positive charge, the electrons have negative charge, and the neutrons have zero charge. electrostatic force - is one of the most powerful and fundamental forces in the universe. It is the force a charged object exerts on another charged object. permittivity – is the ability of a substance to store electrical energy in an electric field. It is a constant of proportionality that exists between electric displacement and electric field intensity in a given medium. vector - a quantity having direction as well as magnitude. Module 2 electric field - a region around a charged particle or object within which a force would be exerted on other charged particles or objects. electric flux - is the measure of flow of the electric field through a given area. Module 3 electric potential - the work done per unit charge in moving an infinitesimal point charge from a common reference point (for example: infinity) to the given point. electric potential energy - is a potential energy (measured in joules) that results from conservative Coulomb forces and is associated with the configuration of a particular set of point charges within a defined system. Module 4 Capacitance - is a measure of the capacity of storing electric charge for a given configuration of conductors. Capacitor - is a passive two-terminal electrical component used to store electrical energy temporarily in an electric field. Dielectric - a medium or substance that transmits electric force without conduction; an insulator. Module 5 electric current - is a flow of charged particles. In electric circuits this charge is often carried by moving electrons in a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons such as in plasma. magnetic field - a region of space near a magnet, electric current, or moving charged particle in which a magnetic force acts on any other magnet, electric current, or moving charged particle. magnetic force - The force exerted between a magnet and a moving, electrically charged particle or between moving, electrically charged particles due to their relative motion. permeability - a quantity measuring the influence of a substance on the magnetic flux in the region it occupies. Module 6 inductance - is a measure of the capacity of storing magnetic field for a solenoid. inductor - is a passive electronic component that stores energy in the form of a magnetic field. magnetic flux - is the measure of flow of the magnetic field through a given area. Resistance - a measurement of the difficulty encountered by a power source in forcing electric current through an electrical circuit. .